Newly assimilated carbon allocation in grassland communities under different grazing enclosure times
文献类型：期刊论文
| 作者 | Bai, Xuejuan2; Yang, Xuan3; Zhang, Shumeng1; An, Shaoshan2 |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 57期号:4页码:563-574 |
| 关键词 | Carbon allocation C-13 pulse labeling Grazing exclosure Plant soil atmosphere system |
| ISSN号 | 0178-2762 |
| DOI | 10.1007/s00374-021-01549-1 |
| 通讯作者 | An, Shaoshan(shan@ms.iswc.ac.cn) |
| 英文摘要 | The flow of photosynthesized carbon (C) from plants to soil and its loss from the respiration in the soil-plant system were measured via in situ(13)CO(2) pulse labeling pasture in overgrazed and long-term grazing exclosures (where grazing was not permitted for 5, 10, and 30 years). During a 30-day chase period, the allocation of newly assimilated C in the shoots, roots, and soil of grazing-excluded grasslands was higher than that in overgrazed grasslands. But the newly assimilated C allocated to shoots and soil respiration in overgrazed grasslands was significantly higher than that in grazing-excluded grasslands. Thirty days after labeling, 35% and 40% of the newly assimilated C in overgrazed grasslands were lost through shoots and soil respiration, respectively. The shoot C-13 recovery was 32% in the 30 years 30 days after labeling, which was significantly higher than that obtained at the 5 and 10 years exclosure sites. Root and soil C-13 recoveries in the 5- and 10-year exclosures were higher than those at the 30-year sites. In the grazing-excluded grasslands, the amount of C-13 in soil organic C peaked 3 days after (CO2)-C-13 exposure and became relatively stable after 19 days of assimilation. The mean C residence time for non-structural C used in the soil respiration under overgrazing (10 days) was shorter than that under 5- (20 days) and 10- (17 days) or 30-year exclosures (14 days). Compared to overgrazing, grazing exclosure, especially moderate grazing exclosure, led to more allocation of newly assimilated C in the plant-soil system but fewer allocation in shoots and soil respiration. |
| 资助项目 | National Natural Science Foundation of China[41671280] ; National Natural Science Foundation of China[41877074] ; National Natural Science Foundation of China[42077072] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000626780800001 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/162100]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | An, Shaoshan |
| 作者单位 | 1.Northwest A&F Univ, Coll Nat Resources & Environm, Key Lab Plant Nutr & Agrienvironm Northwest China, Minist Agr, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dry Land Farming Loess, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Xuejuan,Yang, Xuan,Zhang, Shumeng,et al. Newly assimilated carbon allocation in grassland communities under different grazing enclosure times[J]. BIOLOGY AND FERTILITY OF SOILS,2021,57(4):563-574. |
| APA | Bai, Xuejuan,Yang, Xuan,Zhang, Shumeng,&An, Shaoshan.(2021).Newly assimilated carbon allocation in grassland communities under different grazing enclosure times.BIOLOGY AND FERTILITY OF SOILS,57(4),563-574. |
| MLA | Bai, Xuejuan,et al."Newly assimilated carbon allocation in grassland communities under different grazing enclosure times".BIOLOGY AND FERTILITY OF SOILS 57.4(2021):563-574. |
入库方式： OAI收割
来源：地理科学与资源研究所
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